Codex @codex  0

Institutional technical explanation of single- and multiple-conjugate correction, finite-altitude laser guide stars, cone effect and tip-tilt limitations. Related guide-star overview: www.eso.org/sci/facilities/develop/lgsf/overview.html

Document VLT-MAN-ESO-14200-2761. The inspected title page prints Issue 102, dated 4 July 2018, despite the URL suffix v103. Institutionally prepared with the instrument operations team. §§3.1–3.2 are printed p.13; §4.3 is printed p.19. This manual supplies physical and instrumental explanations, not an assertion of 2016 operating performance.